Alexander jay wuets



(No Model.)

A. J. WURTS. CIRCUIT INTERRUPTING DEVICE. No. 570,416. Patented 001;. 27, 1896.

WITNESSES: INVE/VTU/P 73 ZLW By A'TT R/VEYS UNITED STATES PATENT OEEIcE.

ALEXANDER JAY IVURTS, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY, OF SAME PLACE.

C'lRCUlT-INTERRUPTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 570,416, dated October 2'7, 1896. Application filed August 31, 1895. Serial No. 561,120. (No model.)

T (675 wiwm 116 y wlwl'lbf excessive current in the conductor of which Beitknown that LALEXANDER J AY XVURTS, it forms a part. Each of the time elements a citizen of the United States, residing in 6 is connected with one of the stationary eon- Pittsburg, in the county of Allegheny and tacts 7 of the circuit-interrupting device, the State of Pennsylvania, have invented a new other stationary contacts being connected to 55 and useful Improvement in Oircuit-Interthe terminals of the line-conductors 3 and l. rupting Devices, (Case No. 664,) of which the The movable contacts 8 of the circuit-infollowing is a specification. terrupter are all mechanically connected to My invention relates to circuit-interruptin g operate together, and those for each phase are 10 means for systems of electrical distribution, electricallyconnected so as to bridge the cor- 60 and has particular reference in some of its responding stationary contacts 7. The movmore important features to multiphase cirable member of the switch is normally held cuits, though not in all respects limited to in its closed position by means of a catch 9, use in such relations. connected to an armature 10, as is usual in I 5 The objects of my invention are, first, to this class of devices. In order to raise the 65 provide an actuating or controlling means inarmature 10 and the latch connected therecluded in a normally open local circuit which with, I' provide a suitable electromagnet 11, is closed by the action of an overload in the the coil of which is connected in a local cirmain or distribution circuit, and preferably cuit 12 13, supplied with current from any atasuitablepredetermined interval after-the suitable source, that shown in the present 70 occurrence of such overload; second, to procase being a transformer 11. This local cirvide a circuit-interrupter common to all the cuit 12 13 is normally open, as indicated in phases of a multiphase system, with a 0011- the drawing, and is closed through any one trolling or actuating magnet included in a of the time elements 6 whenever the current normally open local circuit, which will be in the conductor in which such time element 7 5 automatically closed by the action of an exis included becomes sufficiently overloaded to cessive current in a conductor for any one of actuate the circuit-closing device. the phases and preferably at a predetermined It is obvious from the illustration and forcinterval after the occurrence of such excess going description that whenever the current of current, and, third,to providea means,loin any one of the conductors 13 4t exceeds a 80 cated at a point more or less remote from the predetermined limit all of the circuits from circuit breaker or breakers, whereby any one that particular generator will be automaticof aplurality of such circuit-breakers maybe ally interrupted. It will also be understood electrically controlled at will. that any number of generators and circuits \Vith these ends in ViewI have devised the may be connected with the local circuit in 85 apparatus shown diagrammaticallyin the acthe manner shown. It'will also be undercompanying drawing, in which 1 and 2 are stood that this use of a local circuit for entwo-phase generators, each provided with two ergizing the controlling-magnet for the circonductors 3 4: for the two phases of current, cuit-breaker may be employed in connection 0 and a conductor 5, common to both phases. with a single-phase system of distribution, if 0 I11 each of the conductors 3 and l is included desired, and hence I do not limit my invena circuit-closing device 6, such, for example, tion to use in connection with multiphase ciras is shown in my application, Serial No. cuits, as shown in the drawing. 501,119, of even date herewith, and which It being often desirable in large powerwill be hereinafter designated as the time houses to open any one of several circuit- 5 element of the system, it being so conbreakers from a given point, which may be structed and arranged, as is clearly described more or less remote from such circuit-breakin my application above referred to, as to ers, I extend the local-circuit conductors, as close an auxiliary circuit at a predetermined indicated at 15, 16, and 17, to the point from interval of time after the occurrence of an which it is desirable to actuate the circuitbreakers and locate at this point suitable circuit-closing devices 18, one for each circuitbreaker. These circuit-closing devices may be push-butt0ns or any other desired form of hand-operated means whereby the local circuit may be closed through any one of the controlling-magnets 11 when it is desired to open the circuit-breaker with which such magnet is connected.

I claim as my invention 1. In a multiphase system of distribution, the combination with a circuit-interrupter common to all the phases of the system, a normally open local circuit and a controllingmag'net included therein, of circuit-closers for the local circuit, one'l'or each phase of the system, an overload upon any one of the main circuits serving to actuate its circuit-closing device and thus close the local circuit.

2. In a multiphase system of distribution, the combination with a circuit-interrupting device common to all the phases, a normally open local circuit and a controlling-magnet included therein, of a device included in the circuit for each phase of current and operated by an excess of current therein to close the local circuit a predetermined interval of time after the occurrence of such excessive current.

u. The combination with a plurality of systems of electrical distribution provided with eircuit-interrupting devices,controlling-magnets and normally open local circuits therefor fed by an independent source of current, 01": means actuated by an excessive current in any one of the main circuits for closing the corresponding local circuit, and a plurality of circuit-closing devices located at a distantpoint and each operated at will to close the corresponding local circuit.

t. The combination with a plurality of systems of multiphase electrical distribution provided with cireuitinterrupting devices, one for all of the phases of each system, and controlling-magnets therefor, 01' a local circuit for each of said magnets, means actuated by an excessive current of any phase to close the corresponding local circuit, and a plurality of switches independently operated at will to close any one of said local circuits.

In testimony whereof I have hereunto subscribed my name this 29th day of August, A. D. 1895.

ALEXANDER JAY \VURTS.

Witnesses:

JNO. A. SGHIMPF, II. C. TENER. 

